/*解决浮动现象的公共样式*/
.clearfix::before,
.clearfix::after
{
    content: '';
    display: block;
    clear: both;
    visibility: hidden;
}

/*主体样式设置与文字*/
body{
    font:14px/1.5 Helvetica Neue,Helvetica,Arial,Microsoft Yahei,Hiragino Sans GB,Heiti SC,WenQuanYi Micro Hei,sans-serif;;
    font-style: normal;
    font-variant-ligatures: normal;
    font-variant-caps: normal;
    font-variant-numeric: normal;
    font-variant-east-asian: normal;
    font-weight: normal;
    font-stretch: normal;
    font-size: 14px;
    line-height: 1.5;
    font-family: "Helvetica Neue", Helvetica, Arial, "Microsoft Yahei", "Hiragino Sans GB", "Heiti SC", "WenQuanYi Micro Hei", sans-serif;
    color: #333;
    background-color: #fff;
  margin: 0 auto;

}
li{
    list-style-type:none;
}
a{
    text-decoration: none;
}
*
{
    margin: 0;  
}
/*网页的视距效果*/
/* html
{
    perspective: 800px;
} */
html{
    height: 2900px;
margin: 0 auto;
justify-content: center;
}